When the arm comes around and is cocked ready to throw a target, the target setter should be positioned behind the arm, so the target is propelled away from them. If you are sitting in the house looking outward, you would be sitting on the left side of the machine.
Right, one sits on the left side in this trap house like you say. There isn't room to do anything else.
I'm a fat guy and can get into and sit behind the machine and load targets. For a full round of doubles, you need two cases of targets readily available within reach. You need to have two stacks of targets at hand to load during each post (50 targets). You need to be able to refill these two stacks while the shooters change posts. As the arm cycles you hold a target in each hand up high so the arm does not catch your hands. Once the arm locks into place, you set the two targets on the arm and move your hands out of the way and grab another pair of targets.
Probably a race on the fat thing between you and I
, but ignoring that... It probably isn't possible to sit behind the machine in our set up regardless of size. I can barely get past it and the head room is poor too. The way it's done I think the boxes are placed in front of the person loading too. But I'll have to check this out. One of the chaps that practices can probably show me this.
It is important to be behind the arm so that the targets are thrown away from the setter. In the case of a premature release of the machine, you may get your fingers clipped, but if you are loading from the front, you may get your hands jambed by the arm.
Here is one of the main worries with what I've seen with this set up and I don't see how to avoid it. It is very easy to make a mistake. One doesn't like to think about them happening or, even worse, blames the injured person, but mistakes do happen...
Many shooters would rather shoot hand set doubles than those from an automatic machine. Those old machines throw a nice pair of doubles.
The new trap machines hold a lot of targets and take up a lot of room. Often they won't fit in a small trap house without significant modification. Make sure you get the dimensions before you buy a new machine.
Roger that on a new machine. From looking at newer machines and our trap house I think you are right to have reservations. The machine we have will throw doubles with hand setting and I'm hoping that with a bit of adjustment it will do the job well enough. One potential problem is the restricted opening for the bird to get out and ease of adjustment. The last time I looked it was throwing further to the left than the right. I was told it was hard to get it just right withou breaking the right bird.